Acc. Chem. Res., 39 (10), 739 -746, 2006. 10.1021/ar040309d S0001-4842(04)00309-7
Web Release Date: June 29, 2006

Copyright © 2006 American Chemical Society

Catalytically Active Gold: From Nanoparticles to Ultrathin Films

Mingshu Chen and D. Wayne Goodman*

Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012

Received January 24, 2006

Abstract:

Ordered gold (Au) mono- and bilayer structures have been synthesized on a highly reduced titania surface. The Au bilayer exhibits a significantly higher catalytic activity for carbon monoxide oxidation than does the Au monolayer structure. This is the first report of Au completely wetting an oxide surface and demonstrates that ultrathin Au films on an oxide surface have exceptionally high catalytic activity, comparable to the activity observed for Au nanoparticles. This discovery is a key to understanding the nature of the active site of supported Au catalysts.

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